/*!	 distort.h
**	 Header file for implementation of the "Noise Distort" layer
**
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**	Copyright (c) 2007, 2008 Chris Moore
**	Copyright (c) 2012-2013 Carlos López
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
*/

#ifndef __SYNFIG_NOISE_DISTORT_H
#define __SYNFIG_NOISE_DISTORT_H

#include <synfig/vector.h>
#include <synfig/valuenode.h>
#include <synfig/layers/layer_composite_fork.h>
#include <synfig/gradient.h>
#include <synfig/time.h>
#include "random_noise.h"

class NoiseDistort : public synfig::Layer_CompositeFork
{
    SYNFIG_LAYER_MODULE_EXT

private:
    // Parameter: (synfig::Vector)
    synfig::ValueBase param_displacement;
    // Parameter: (synfig::Vector)
    synfig::ValueBase param_size;
    // Parameter: (RandomNoise)
    synfig::ValueBase param_random;
    // Parameter: (RandomNoise::SmoothType)
    synfig::ValueBase param_smooth;
    // Parameter: (int)
    synfig::ValueBase param_detail;
    // Parameter: (synfig::Real)
    synfig::ValueBase param_speed;
    // Parameter: (bool)
    synfig::ValueBase param_turbulent;

    synfig::Color color_func(const synfig::Point &x, float supersample, synfig::Context context)const;
    synfig::CairoColor cairocolor_func(const synfig::Point &x, float supersample, synfig::Context context)const;
    synfig::Point point_func(const synfig::Point &point)const;

    float calc_supersample(const synfig::Point &x, float pw, float ph)const;

public:
    NoiseDistort();

    virtual bool set_param(const synfig::String &param, const synfig::ValueBase &value);
    virtual synfig::ValueBase get_param(const synfig::String &param)const;
    virtual synfig::Color get_color(synfig::Context context, const synfig::Point &pos)const;
    virtual synfig::CairoColor get_cairocolor(synfig::Context context, const synfig::Point &pos)const;
    // virtual bool accelerated_render(synfig::Context context,synfig::Surface *surface,int quality, const synfig::RendDesc &renddesc, synfig::ProgressCallback *cb)const;
    synfig::Layer::Handle hit_check(synfig::Context context, const synfig::Point &point)const;
    using Layer::get_bounding_rect;
    virtual synfig::Rect get_bounding_rect(synfig::Context context)const;
    virtual Vocab get_param_vocab()const;
    virtual bool reads_context()const
    {
        return true;
    }

protected:
    virtual synfig::RendDesc get_sub_renddesc_vfunc(const synfig::RendDesc &renddesc) const;
    virtual synfig::rendering::Task::Handle build_rendering_task_vfunc(synfig::Context context) const;
}; // EOF of class NoiseDistort

#endif